Excavating machines for forming tunnels and underground mine roadways

摘要

An excavating machine (1) for forming tunnels or underground mine roadways includes a mobile base unit (4) and a cutter unit (6) comprising a rotary cutter head (7) and an articulated boom (10, 11) supporting the cutter head and supported by the base unit for movement about a first pivot axis (13). The articulated boom comprising two boom sections (10, 11) connected for movement about a second pivot axis (14), the first and second pivot axes being parallel. The axis of rotation (9) of the rotary cutter head is inclined to said first and second pivot axes. IMAGE